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Finding the Fourth Proportional to 5,144.60, 7,716.90 and 2,957.60

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Solution

The fourth proportional to 5,144.60, 7,716.90 and 2,957.60 is: 4,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,144.60 : 7,716.90 = 2,957.60 : x
  2. Step 2: Convert to fraction form
    5,144.60/7,716.90 = 2,957.60/x
  3. Step 3: Cross multiply
    5,144.60x = 7,716.90 × 2,957.60
  4. Step 4: Simplify right side
    5,144.60x = 22,823,503.44
  5. Step 5: Solve for x
    x = 22,823,503.44/5,144.60
  6. Step 6: Final answer
    x = 4,436.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.